Which of the following statements are correct?
(i) r-RNA provides the template for synthesis of proteins.
(ii) t-RNA brings amino acids and reads the genetic code.
(iii) RNA polymerase binds to promoter and initiates transcription.
(iv) A segment of DNA coding for polypeptide is called intron.

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(i) and (iii)

(i) and (ii)

(i), (ii) and (iii)

(ii) and (iii)

answer is D.

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Detailed Solution

mRNA provides the template for synthesis of proteins. The segment of DNA having information for the synthesis of a particular protein or RNA is called cistron . The coding regions of gene are called exons and the non coding ones are called introns.

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